body,html{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.box {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    // background-color: rgba(0, 0, 0, 0.4);
    background-color: #FFFFFF;

    .call_box_video {
        width: 960px;
        height: 600px;
        position: relative;
        border: 1px solid #ccc;
        box-sizing: border-box;
        background-color: rgba(255, 255, 255, 0.9);

        #left_box {
            width: 100%;
            height: 100%;
            box-sizing: border-box;

            #host {
                position: absolute;
                top: -1px;
                right: -1px;
                z-index: 9;
                width: 300px;
                height: 150px;
                border: 1px solid #ccc;
                box-sizing: border-box;
            }

            #audience {
                width: 100%;
                height: 100%;
            }

            .call_text {
                width: 100%;
                height: 100%;
                position: absolute;
                top: 0;
                left: 0;
                margin-right: 16px;
                margin-bottom: 20px;
                text-align: center;
                border: 1px solid #eee;

                button {
                    width: 160px;
                    height: 38px;
                    margin-top: 30px;
                    color: #fff;
                    background: #828282;
                    border: none;
                    border-radius: 20px;
                    cursor: pointer;

                    &:hover {
                        background-color: red;
                    }
                }

                .call_btn {
                    display: none;
                    margin: 55% auto;
                }

                &:hover {
                    .call_btn {
                        display: block;
                    }
                }
            }
        }

    }
}
.callend_text {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 45px;
    width: 100%;
    height: 100%;
    text-align: center;
  }
  
//   .callend_text button {
//     width: 100px;
//   }